So I'm turning my old Note 4 into my music player for work, as I can't have my actual phone on me. Between my audio books, my Google music, and now I have my Amazon music on there, all downloaded as it has no data plan and my job has no wifi, I've got to wonder, why is the phone's battery temp still reading in the high 80s-low 90s right now when it's doing NOTHING? Or is it just a sign that my near 3 year old phone is just dying?